Cibba who is in Lorim gives Sumo a key, and tells him to go up the river by the Ammonite Coast and beyond to Floatrock. He is to use the key to open the cave in the Floatrocks. The guardian monster there is in possession of the legendary sword. Sumo is to return to Cibba after claiming the sword and to return to Lorim with it.

Sumo ventures into the cave, and eventually fights a Kraken. Upon its death, a door opens up which Sumo exits it.